Systematic Parasitology最新文献

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A taxonomic assessment of Subulura (Murisubulura) andersoni (Cobbold, 1876) (Nematoda: Subuluridae) from murid and sciurid rodents. 安氏小齿(Murisubulura) (cobold, 1876)(线虫纲:小齿科)的分类鉴定。
IF 1.2 4区 医学
Systematic Parasitology Pub Date : 2025-07-28 DOI: 10.1007/s11230-025-10237-9
Lesley R Smales, Leslie A Chisholm
{"title":"A taxonomic assessment of Subulura (Murisubulura) andersoni (Cobbold, 1876) (Nematoda: Subuluridae) from murid and sciurid rodents.","authors":"Lesley R Smales, Leslie A Chisholm","doi":"10.1007/s11230-025-10237-9","DOIUrl":"10.1007/s11230-025-10237-9","url":null,"abstract":"<p><p>Subulura (Murisubulura) andersoni (Cobbold, 1876) is one of 20 species of the genus Subulura known from mammals and one of four species known from murid rodents across South Africa, India, southeast Asia, Japan, New Guinea and Australia. On re-evaluation of all the relevant literature and examination of specimens of S. (M.) andersoni and S. (M.) ortleppi Inglis, 1960, the following taxonomic decisions were made. Subulura (M.) ortleppi, S. (M.) sipirocki Purwanginsih, 2003 and S. (M.) suzukii Yagi & Kamiya, 1981 were placed as synonyms of S. (M.) andersoni based on morphological and morphometric evidence. Subulura hindi Mirza, 1936 was confirmed as a valid species and Latibuccana funambulenis Patwardhan, 1935 declared a species inquirendum. The type locality of S. (M.) andersoni was confirmed as northern India not Sri Lanka (Ceylon). Prevalence and locality data suggested that the focus of infection of S. (M.) andersoni was in the murine Bunomys chrysocomus (Hoffman) from Sulawesi, Indonesia with the geographic range extending to South Africa in the west and Australia in the east.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"48"},"PeriodicalIF":1.2,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144735510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phylogenetic insights into Annulotrematoides (Kritsky & Boeger, 1995) and Urocleidoides (Mizelle & Price, 1964) (Monopisthocotyla: Dactylogyridae) species parasitizing Cyphocharax modestus (Fernández-Yépez) (Characiformes: Curimatidae) from southeastern Brazil. 对寄生于巴西东南部的瓢虫(Fernández-Yépez)(特征:瓢虫科)的环状虫类(Kritsky & Boeger, 1995)和尾虫类(Mizelle & Price, 1964)(单子叶目:瓢虫科)物种的系统发育观察。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-07-23 DOI: 10.1007/s11230-025-10239-7
Melissa Miyuki Osaki-Pereira, Priscilla de Oliveira Fadel Yamada, Mariana Bertholdi Ebert, Reinaldo José da Silva
{"title":"Phylogenetic insights into Annulotrematoides (Kritsky & Boeger, 1995) and Urocleidoides (Mizelle & Price, 1964) (Monopisthocotyla: Dactylogyridae) species parasitizing Cyphocharax modestus (Fernández-Yépez) (Characiformes: Curimatidae) from southeastern Brazil.","authors":"Melissa Miyuki Osaki-Pereira, Priscilla de Oliveira Fadel Yamada, Mariana Bertholdi Ebert, Reinaldo José da Silva","doi":"10.1007/s11230-025-10239-7","DOIUrl":"10.1007/s11230-025-10239-7","url":null,"abstract":"<p><p>The integration of molecular data with morphological analysis has greatly advanced the understanding of parasitic diversity, particularly within groups like Dactylogyridae. While morphological features have long been used to classify genera and species, molecular studies have often revealed discrepancies that challenge traditional taxonomies. Urocleidoides (Mizelle & Price, 1964) is one such example, with previous research suggesting it may not be monophyletic. Meanwhile, Annulotrematoides (Kritsky & Boeger, 1995) has lacked any molecular data until now, limiting our understanding of its evolutionary relationships. In this study, we provide the first molecular sequences for Annulotrematoides, which were grouped with Urocleidoides spp. Our analysis of Annulotrematoides bonaerensis Rossin & Timi, 2016 and Urocleidoides surianoae Rossin & Timi, 2016 found parasitizing the gills of Cyphocharax modestus (Fernández-Yépez) revealed a strong phylogenetic relationship between these two species, despite their classification in different genera. This discovery challenges the current morphological-based taxonomy of Urocleidoides and suggests that U. surianoae may not be accurately placed within its genus. The clustering of Urocleidoides with Annulotrematoides for the first time highlights the need for a taxonomic re-evaluation of these groups. Additionally, this work underscores the importance of molecular data in resolving evolutionary relationships and advancing our understanding of parasitic diversity.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"47"},"PeriodicalIF":1.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144692472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Description of a new species of Ixodes Latreille, 1795 (Acari: Ixodidae), parasite of the Mexican spiny pocket mouse, Heteromys irroratus Gray (Rodentia: Heteromyidae) in Mexico. 墨西哥棘袋鼠(杂家鼠目:杂家鼠科)寄生的一新种记述(蜱螨亚纲:杂家鼠科)。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-07-19 DOI: 10.1007/s11230-025-10245-9
Dmitry A Apanaskevich, Kennedy G Bunn
{"title":"Description of a new species of Ixodes Latreille, 1795 (Acari: Ixodidae), parasite of the Mexican spiny pocket mouse, Heteromys irroratus Gray (Rodentia: Heteromyidae) in Mexico.","authors":"Dmitry A Apanaskevich, Kennedy G Bunn","doi":"10.1007/s11230-025-10245-9","DOIUrl":"https://doi.org/10.1007/s11230-025-10245-9","url":null,"abstract":"<p><p>Ixodes (Ixodes) zacateco n. sp. (Acari: Ixodidae) is described based on females ex the Mexican spiny pocket mouse, Heteromys irroratus Gray (Rodentia: Heteromyidae) from Mexico. Females of this new species are different from all other species of the subgenus Ixodes Latreille, 1795 from the Americas by the development of lateral carinae and punctations on scutum, length of alloscutal setae, shape and size of auriculae, development and size of spurs on coxae and lack of syncoxae.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"46"},"PeriodicalIF":1.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144669009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new species of Falcaustra Lane, 1915 (Nematoda: Kathlaniidae) from the Titicaca water frog Telmatobius culeus (Garman) (Anura: Telmatobiidae) in Peru. 秘鲁的的的喀卡水蛙(无尾目:水蛙科)一新种,1915(线虫纲:水蛙科)。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-07-02 DOI: 10.1007/s11230-025-10244-w
Sergio Santillán, David Lopez, Aarón Mondragón-Martínez, Rosa Martínez-Rojas, Celso L Cruces, Jhon D Chero
{"title":"A new species of Falcaustra Lane, 1915 (Nematoda: Kathlaniidae) from the Titicaca water frog Telmatobius culeus (Garman) (Anura: Telmatobiidae) in Peru.","authors":"Sergio Santillán, David Lopez, Aarón Mondragón-Martínez, Rosa Martínez-Rojas, Celso L Cruces, Jhon D Chero","doi":"10.1007/s11230-025-10244-w","DOIUrl":"https://doi.org/10.1007/s11230-025-10244-w","url":null,"abstract":"<p><p>A new kathlaniid nematode, Falcaustra peruensis n. sp., was described using light and scanning electron microscopy, based on specimens collected from the intestine of the Titicaca water frog, Telmatobius culeus (Garman) (Anura: Telmatobiidae) in Peru. Falcaustra peruensis n. sp. belongs to the Falcaustra group that is characterized by the presence of a pseudosucker. The new species can be easily differentiated from other congeneric species, with the exception of four species, by its papillae pattern. This pattern includes 6 precloacal papillae, 4 adcloacal papillae, 12 postcloacal papillae, plus 1 median papilla. The new species shares similarities with Falcaustra peruensis n. sp. by having the same papillae pattern (6-4-12 + 1) and a pseudosucker, but can be differentiated from F. sanjuanensis by the morphology of the gubernaculum (triangular with a pair of proximal and distal processes in the new species vs triangular without processes in F. sanjuanensis), the proportion of gubernaculum length relative to total body length (1.2-1.24% in the new species vs 1.56-1.71% in F. sanjuanensis), the morphology of the deirids (button-shaped surrounded by a horseshoe-shaped border in the new species vs elongated surrounded by a circular border in F. sanjuanensis) and body size (males 6.14-7.62 mm and females 4.1-6.8 mm in the new species vs males 11.2-13.5 mm and females 10.1-15.5 mm in F. sanjuanensis). Falcaustra peruensis n. sp. represents the fourth nominal species of the genus in Peru and the fourteenth species described in the Neotropical region.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"45"},"PeriodicalIF":1.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144546175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Systematic revision of the genus Orchidasma Looss, 1900 and description of Orchidasma orchilobata n. sp. from the loggerhead Caretta caretta (L.) and Kemp's ridley Lepidochelys kempii (Garman) turtles. 1900年兰科植物属的系统修订及红海龟(Caretta Caretta)和Kemp’s ridley Lepidochelys kempii (Garman)龟中兰科植物的描述。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-06-30 DOI: 10.1007/s11230-025-10243-x
Thomas G Rosser, Aiden Meaux, Ethan T Woodyard, Justin M Stilwell, Bradley M Richardson, Logan R S Robison, Jill B Hudnall, Kaylin McNulty, Jonah A Nguyen, Divya Rose, Debra Moore, Beth Peterman, Stephen R Reichley, Mark L Lawrence
{"title":"Systematic revision of the genus Orchidasma Looss, 1900 and description of Orchidasma orchilobata n. sp. from the loggerhead Caretta caretta (L.) and Kemp's ridley Lepidochelys kempii (Garman) turtles.","authors":"Thomas G Rosser, Aiden Meaux, Ethan T Woodyard, Justin M Stilwell, Bradley M Richardson, Logan R S Robison, Jill B Hudnall, Kaylin McNulty, Jonah A Nguyen, Divya Rose, Debra Moore, Beth Peterman, Stephen R Reichley, Mark L Lawrence","doi":"10.1007/s11230-025-10243-x","DOIUrl":"https://doi.org/10.1007/s11230-025-10243-x","url":null,"abstract":"<p><p>Adult flukes of the genus Orchidasma were collected from the intestinal tracts of loggerhead Caretta caretta and Kemp's ridley Lepidochelys kempii sea turtles as part of diagnostic investigations into sea turtle strandings. Two morphologically distinct species were present: one represented the type-species Orchidasma amphiorchis and an undescribed species. Orchidasma amphiorchis is redescribed and Orchidasma orchilobata n. sp. is described based on morphological, molecular and phylogenetic analyses. Oxford Nanopore Technology and Illumina sequencing were used to generate complete mitochondrial genomes and nuclear ribosomal operons for both species. Sanger sequencing from additional hologenophore specimens for both species were used to assess interspecific and intraspecific variability. Single locus phylogenetic analyses of aligned partial 28S rRNA gene sequences and concatenation of mitochondrial genes of the two species and other trematodes were performed to assess the taxonomic affinity of Orchidasma. Analysis of partial 28S rRNA gene sequences placed O. amphiorchis and O. orchilobata n. sp. as members of the Monorchioidea and closest to Skrjabinopsolus nudidorsalis, a member of Deropristidae. This disagreed with previous inclusion of Orchidasma as a member of Telorchiidae within Plagiorchioidea. Whole mitochondrial genome sequencing and phylogenetic analysis resulted in similar topology, suggesting a revision to include Orchidasma as a member of Deropristidae supported by shared morphological characters and nucleotide sequence data with deropristid congeners.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"44"},"PeriodicalIF":1.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144531130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphological and molecular description of Corynosoma paraevae n. sp. (Acanthocephala: Polymorphidae) juveniles from Notothenia coriiceps Richardson (Perciformes: Nototheniidae) in Argentine Islands, West Antarctica. 南极西部阿根廷群岛棘鱼科(鳍形目:棘鱼科)副棘鱼幼鱼的形态和分子特征。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-06-23 DOI: 10.1007/s11230-025-10238-8
O M Amin, A Chaudhary, M E Caracciolo, N Y Rubtsova, C Wendt, T A Kuzmina, W de Souza, H S Singh
{"title":"Morphological and molecular description of Corynosoma paraevae n. sp. (Acanthocephala: Polymorphidae) juveniles from Notothenia coriiceps Richardson (Perciformes: Nototheniidae) in Argentine Islands, West Antarctica.","authors":"O M Amin, A Chaudhary, M E Caracciolo, N Y Rubtsova, C Wendt, T A Kuzmina, W de Souza, H S Singh","doi":"10.1007/s11230-025-10238-8","DOIUrl":"https://doi.org/10.1007/s11230-025-10238-8","url":null,"abstract":"<p><p>Adults of Corynosoma evae Zdzitowiecki, 1984 were described from the leopard seal Hydrurga leptonyx (Blainville) in South Shetlands, South Georgia, and Falkland Islands and juveniles from the Antarctic dragonfish Parachaenichthys georgianus (Fischer) were also reported. We describe excysted juveniles of a morphologically indistinguishable cryptic species, Corynosoma paraevae n. sp. from the body cavity of Notothenia coriiceps Richardson collected off Galindez Island, Argentine Islands, West Antarctica. Our juveniles were generally smaller than those of adults of C. evae but most other measurements were comparable. We compared our morphometric description of C. paraevae n. sp. juveniles from N. coriiceps with the one available for C. evae adults collected from H. leptonyx and the juveniles redescribed from three other species of Antarctic notothenioid fish. We have included optical microscopy and scanning electron microscope (SEM) images of internal and external structures, respectively. Various cuts of proboscis hooks and roots studied by Energy Dispersive X-ray analysis (EDXA) revealed the highest levels of calcium, phosphorous, and sulfur reaching 50.55%, 20.30%, and 4.15%, respectively. This pattern is compared with those of cystacanths of 6 other species of acanthocephalans. Our molecular description of the new cryptic species involved the 18S subunit of ribosomal DNA and mitochondrial cytochrome c oxidase subunit 1 (cox1) from mitochondrial DNA. The cox1 tree showed that the four isolates of the new species and two of C. evae from the same collection form separate clades that confirmed C. paraevae n. sp. as different species. The cox1 interspecific relationship inferred with 14 sequences revealed 08 groupings alienated from each other.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"43"},"PeriodicalIF":1.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144477896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Male description, bionomics, and phylogenetic placement of Phytodietus (Weisia) clavotibialis Shimizu & Konishi (Hymenoptera: Ichneumonidae: Tryphoninae: Phytodietini), with insights into the subgeneric systematics of the genus Phytodietus Gravenhorst. 植物dietus (Weisia) clavotibialis Shimizu和Konishi的雄性描述,生物学和系统发育定位(膜翅目:姬蜂科:Tryphoninae: Phytodietini),以及对植物dietus Gravenhorst属亚属系统的见解。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-06-18 DOI: 10.1007/s11230-025-10240-0
So Shimizu, Kazuhiko Konishi
{"title":"Male description, bionomics, and phylogenetic placement of Phytodietus (Weisia) clavotibialis Shimizu & Konishi (Hymenoptera: Ichneumonidae: Tryphoninae: Phytodietini), with insights into the subgeneric systematics of the genus Phytodietus Gravenhorst.","authors":"So Shimizu, Kazuhiko Konishi","doi":"10.1007/s11230-025-10240-0","DOIUrl":"https://doi.org/10.1007/s11230-025-10240-0","url":null,"abstract":"<p><p>Phytodietus (Weisia) clavotibialis Shimizu & Konishi, 2018 (Hymenoptera: Ichneumonidae: Tryphoninae: Phytodietini) is a rare and poorly known Darwin wasp, previously known only from the female holotype collected in Japan. In this study, the male is described for the first time based on two specimens. One of these was reared from a tortricid leaf-roller moth feeding on Rhododendron reticulatum D. Don ex G. Don, marking the first host record for both the species and the subgenus Weisia Schmiedeknecht from Tortricidae. New distribution records from India and Taiwan extend the known range of P. (W.) clavotibialis and reveal a biogeographic pattern resembling that of its closest relative, P. (W.) pitambari Kaur & Jonathan, 1979. Partial sequences of mitochondrial CO1 and nuclear 28S rDNA genes were newly obtained, representing the first molecular data for Weisia, and were used in a preliminary phylogenetic analysis. Although the subgenus Euctenopus Ashmead was not included in our analysis, the molecular phylogeny recovered Weisia as the most basal lineage within the genus Phytodietus Gravenhorst, supporting its recognition as a distinct subgenus, while the monophyly of the subgenera Phytodietus and Neuchorus Uchida was not supported. Given the longstanding confusion and our results, it is concluded that these subgenera are best treated as a single subgenus; thus, Neuchorus syn. nov., together with its previously recognized synonym Doratistes Seyrig, is synonymized under Phytodietus. Additionally, P. (W.) clavotibialis appears to be associated with secondary natural environments characteristic of Satoyama landscapes, raising conservation concerns due to ongoing habitat degradation.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"42"},"PeriodicalIF":1.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In the shade of a snow flat: Parasitoids of Tagiades litigiosa Möschler (Lepidoptera: Hesperiidae) with the description of a new species of Brachymeria Westwood (Hymenoptera: Chalcididae) from South India. 在雪坪的阴凉处:印度南部绢翅目:绢翅目:绢翅目Möschler的寄生蜂及一新种(膜翅目:绢翅目)的描述。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-06-09 DOI: 10.1007/s11230-025-10236-w
C Binoy, P M Sureshan
{"title":"In the shade of a snow flat: Parasitoids of Tagiades litigiosa Möschler (Lepidoptera: Hesperiidae) with the description of a new species of Brachymeria Westwood (Hymenoptera: Chalcididae) from South India.","authors":"C Binoy, P M Sureshan","doi":"10.1007/s11230-025-10236-w","DOIUrl":"https://doi.org/10.1007/s11230-025-10236-w","url":null,"abstract":"<p><p>The water snow flat Tagiades litigiosa Möschler (Lepidoptera: Hesperiidae), widely distributed across tropical regions, has been the subject of limited studies on its natural enemies. Here, we report the first recorded instance of pupal parasitoids Tagiades litigiosa from South India. A newly discovered species, Brachymeria tagiades sp. nov. is described and illustrated as a pupal parasitoid of this butterfly. Additionally, we record B. bengalensis (Cameron, 1897) and B. euploeae (Westwood, 1837) (Brachymeriinae) and Tainaniella malabarica Narendran, 1989 (Haltichellinae) emerging from T. litigiosa pupae in the same region. An unidentified braconid parasitoid was also observed attacking the larvae of T. litigiosa. Furthermore, the genus Tainaniella Masi is reviewed, with detailed illustrations and redescriptions based on fresh specimen of T. malabarica and type images from various repositories.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"41"},"PeriodicalIF":1.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144250804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new Myxidium (Cnidaria: Myxosporea: Myxidiidae) from the gallbladder of the yellow bullhead, Ameiurus natalis (Siluriformes: Ictaluridae), from Southwestern Arkansas, USA. 美国阿肯色西南部黄头鲂胆囊一新种粘虫(刺胞纲:粘孢子目:粘虫科)。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-05-27 DOI: 10.1007/s11230-025-10234-y
Chris T McAllister, Donald G Cloutman, Eric M Leis, Henry W Robison
{"title":"A new Myxidium (Cnidaria: Myxosporea: Myxidiidae) from the gallbladder of the yellow bullhead, Ameiurus natalis (Siluriformes: Ictaluridae), from Southwestern Arkansas, USA.","authors":"Chris T McAllister, Donald G Cloutman, Eric M Leis, Henry W Robison","doi":"10.1007/s11230-025-10234-y","DOIUrl":"https://doi.org/10.1007/s11230-025-10234-y","url":null,"abstract":"<p><p>The yellow bullhead, Ameiurus natalis (Lesueur) is a moderately-sized member of the catfish family Ictaluridae Gill with a fairly large North American distribution. Between March and December 2021 and again between March 2022 and March 2023, 37 A. natalis specimens were collected from watersheds in Arkansas (n = 30) and Oklahoma (n = 7), USA, and their gills, gallbladders, urinary bladders, fins, integument, other major organs, and musculature were examined for myxosporeans. The gallbladder of a single individual yellow bullhead from Sevier County, Arkansas, USA, was infected with a novel myxosporean, Myxidium horatioense n. sp. and an unknown species of myxosporean. Qualitative and quantitative morphological data were from ethanol-preserved myxospores of M. horatioense n. sp. Molecular data consisted of 1,846 and 844 base pair sequences of the partial small subunit ribosomal RNA gene for M. horatioense n. sp. and an unidentified myxosporean, respectively. This is the first report of any member of the genus Myxidium from A. natalis. This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as urn:lsid:zoobank.org:pub:urn:lsid:zoobank.org:act:92DC4EB0-3590-4EE0-8D90-D1279C52763B.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"40"},"PeriodicalIF":1.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144152733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biological characterization and designation of a neotype for Eimeria innocua Moore and Brown 1952: A coccidium (Apicomplexa: Eimeriidae) of turkeys (Meleagris gallopavo Linn.). Moore and Brown 1952:火鸡球虫(Meleagris gallopavo Linn.)的一种球虫(顶复合体:艾美耳球虫科)的生物学特性和新型的命名。
IF 1 4区 医学
Systematic Parasitology Pub Date : 2025-05-21 DOI: 10.1007/s11230-025-10232-0
Jessica Laura Rotolo, Lisa Jayne Gordon, John Robert Barta
{"title":"Biological characterization and designation of a neotype for Eimeria innocua Moore and Brown 1952: A coccidium (Apicomplexa: Eimeriidae) of turkeys (Meleagris gallopavo Linn.).","authors":"Jessica Laura Rotolo, Lisa Jayne Gordon, John Robert Barta","doi":"10.1007/s11230-025-10232-0","DOIUrl":"10.1007/s11230-025-10232-0","url":null,"abstract":"<p><p>Eimeria innocua Moore and Brown 1952 is a mildly pathogenic coccidium described from turkeys. Despite being described over half of a century ago, its endogenous development is currently lacking a detailed description. In this study, the life history of E. innocua was re-examined, including detailed observations on endogenous development. Oocysts measured 21.9 μm <math><mo>×</mo></math> 19.7 μm (n=140; shape index: 1.1) and sporocysts averaged 13.0 μm <math><mo>×</mo></math> 7.2 μm (n=75; shape index: 1.8). Experimental infections were used to examine the endogenous development of the parasite every six hr for a period of 120 hours. Samples from the descending and ascending duodenum, upper and mid-jejunum and the jejunum at Meckel's diverticulum were collected for histology; most parasite stages occupied the first four regions. Four generations of merogony were suspected prior to gametogony despite observing only three distinct but similar meront-types. Intracellular sporozoites and stages of the first-generation of merogony sometimes infected CD3<sup>+</sup> intraepithelial lymphocytes. First-generation meronts contained 16-20 merozoites and were located perinuclear to host enterocytes. The second meront-type was the smallest observed, each possessed 14-16 merozoites and were located apical to enterocyte nuclei. The morphology of third- and fourth-generation meronts (the third meront-type) could not be differentiated unless viewed in a transverse section. It was suspected that third-generation meronts contained 24-30 merozoites and fourth generation meronts possessed 22-24 merozoites. Meront residuum was sometimes observed within meronts of the third-type. Gametogonic stages were first identified at 96 hours post-inoculation (hpi); the first unsporulated oocysts were observed at 108 hpi.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 4","pages":"39"},"PeriodicalIF":1.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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